Nana can be seen everywhere in anything After School-related, because although she joined the group during its third single, this girl practically managed to become the face of After School as a member of both the main group After School and its unit group Orange Caramel.

She alternates between sexy and cute at a speed that could be enough to wring anyone exhausted, but she still pulls it off perfectly, being lovable and somewhat quirky for Orange Caramel and then still having room to transform into full-out sexy for the long and leggy After School.

Can you believe this girl is only 21 after all that? Happy birthday Nana, and we hope your graduation from After School will be something far, far off.